# CVE-2017-4919: Auth bypass in VMware vCenter Server

> Authenticated vSphere users can bypass guest OS authentication via the VIX API to access guest operating systems without credentials.

- **Severity:** Critical 9.0 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Jul 2017
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-h7jp-76rq-hgj5

## What is CVE-2017-4919?

CVE-2017-4919 is a critical authentication bypass vulnerability in Vmware Vcenter Server, published on 28 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

VMware vCenter Server 5.5, 6.0, 6.5 allows vSphere users with certain, limited vSphere privileges to use the VIX API to access Guest Operating Systems without the need to authenticate.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2017-4919?

It affects 1 product.


Products: Vmware Vcenter Server.

## How do I fix CVE-2017-4919?

No fix has been published for CVE-2017-4919 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-4919 being exploited?

There is no known exploitation of CVE-2017-4919 in the wild and no public exploit code.

## Other vulnerabilities in Vmware Vcenter Server

- [CVE-2026-59310](https://insights.sbomify.com/CVE-2026-59310/): Broadcom VMware vCenter Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2023-34048](https://insights.sbomify.com/CVE-2023-34048/): VMware vCenter Server Out-of-Bounds Write (critical 9.8, exploited in the wild)
- [CVE-2020-3952](https://insights.sbomify.com/CVE-2020-3952/): VMware vCenter Server Information Disclosure (critical 9.8, exploited in the wild)
- [CVE-2021-22017](https://insights.sbomify.com/CVE-2021-22017/): VMware vCenter Server Improper Access Control (medium 5.3, exploited in the wild)
- [CVE-2015-2342](https://insights.sbomify.com/CVE-2015-2342/): Code injection in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-4919 and fix it if it is affected.

What it is: CVE-2017-4919 is a critical authentication bypass vulnerability in Vmware Vcenter Server, published on 28 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-4919 in the wild and no public exploit code.

Affected product: Vmware Vcenter Server. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-4919/ (Markdown: https://insights.sbomify.com/CVE-2017-4919/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-4919
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-4919
- OSV: https://osv.dev/vulnerability/CVE-2017-4919

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-4919/
Summaries are generated and may contain mistakes; the official description above is the record.